C# string replace does not work as it doesn’t replace the value [duplicate]

The problem is that strings are immutable. The methods replace, substring, etc. do not change the string itself. They create a new string and replace it. So for the above code to be correct, it should be path1 = path.Replace(“\\bin\\Debug”, “\\Resource\\People\\VisitingFaculty.txt”); Or just path = path.Replace(“\\bin\\Debug”, “\\Resource\\People\\VisitingFaculty.txt”); if another variable is not needed. This answer … Read more

Replace with regex in Golang

You can use capturing groups with alternations matching either string boundaries or a character not _ (still using a word boundary): var re = regexp.MustCompile(`(^|[^_])\bproducts\b([^_]|$)`) s := re.ReplaceAllString(sample, `$1.$2`) Here is the Go demo and a regex demo. Notes on the pattern: (^|[^_]) – match string start (^) or a character other than _ \bproducts\b … Read more

Why is conversion from string literal to ‘char*’ valid in C but invalid in C++

Up through C++03, your first example was valid, but used a deprecated implicit conversion–a string literal should be treated as being of type char const *, since you can’t modify its contents (without causing undefined behavior). As of C++11, the implicit conversion that had been deprecated was officially removed, so code that depends on it … Read more

How do I pad a string with zeros?

To pad strings: >>> n = ‘4’ >>> print(n.zfill(3)) 004 To pad numbers: >>> n = 4 >>> print(f'{n:03}’) # Preferred method, python >= 3.6 004 >>> print(‘%03d’ % n) 004 >>> print(format(n, ’03’)) # python >= 2.6 004 >>> print(‘{0:03d}’.format(n)) # python >= 2.6 + python 3 004 >>> print(‘{foo:03d}’.format(foo=n)) # python >= 2.6 … Read more